169901-90-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 169901-90-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,9,0 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 169901-90:
(8*1)+(7*6)+(6*9)+(5*9)+(4*0)+(3*1)+(2*9)+(1*0)=170
170 % 10 = 0
So 169901-90-0 is a valid CAS Registry Number.